Idle Speed - Subaru Legacy 2004 Service Manual

3. Idle Speed

A: INSPECTION
1) Before checking the idle speed, check the fol-
lowing:
(1) Ensure the air cleaner element is free from
clogging, ignition timing is correct, spark plugs
are in good condition, and hoses are connected
properly.
(2) Ensure the malfunction indicator light does
not illuminate.
2) Idle the engine.
3) Stop the engine, and turn the ignition switch to
OFF.
4) When using Subaru Select Monitor, refer to the
following. <Ref. to ME(H4SO 2.0)-13, SPECIAL
TOOL, PREPARATION TOOL, General Descrip-
tion.>
(1) Insert the cartridge to the Subaru Select
Monitor.
(2) Connect the Subaru Select Monitor to data
link connector.
(1) Data link connector
(3) Turn the ignition switch to ON, and Subaru
select monitor switch to ON.
(4) Select {Each System Check} in the Main
Menu.
(5) Select {Engine} in the Selection Menu.
(6) Select {Current Data Display & Save} in the
Engine Control System Diagnosis.
(7) Select {Data Display} in the Data Display
Menu.
(8) Start the engine, and read engine idle
speed.
5) When using the tachometer (Secondary pick-up
type):
(1) Attach the pick-up clip to No. 1 cylinder
spark plug cord.
Idle Speed
(2) Start the engine, and read engine idle
speed.
NOTE:
This ignition system provides simultaneous ignition
for #1 and #2 plugs. It must be noted that some ta-
chometers may register twice that of actual engine
speed.
6) Check the idle speed when unloaded. (With
headlights, heater fan, rear defroster, radiator fan,
A/C, etc. OFF)
Idle speed [No load and gears in "N" or "P"
range]:
650
7) Check the idle speed when loaded. (Turn the A/
(1)
C switch to "ON" and operate the compressor for at
least one minute before measurement.)
Idle speed [A/C "ON" and gears in "N" or "P"
range]:
800
NOTE:
AT-01712
Idle speed cannot be adjusted manually, because
the idle speed is automatically adjusted. If the idle
speed is out of specifications, refer to General Di-
agnosis Table under "Engine Control System".
<Ref. to EN(H4SO 2.0)(diag)-2, Basic Diagnostic
Procedure.>
ME(H4SO 2.0)-23
#
100 rpm
#
100 rpm
MECHANICAL
ME-00811